CVE-2026-93712
NVD: Dancer2 versions from 2.1.0 before 2.2.0 for Perl serve files from outside public_dir via relative path segments in the File route handler. NVD: The handler joins the request path onto public_dir without collapsing relative segments, and checks only that the result is a readable regular file. NVD: A request for /../outside.txt escapes public_dir, and percent-encoding the dots reaches the same file.
7.5 Severity
HIGH EPSS
0.0000 (0) KEV
-
Source-published summary
NVD: Dancer2 versions from 2.1.0 before 2.2.0 for Perl serve files from outside public_dir via relative path segments in the File route handler. NVD: The handler joins the request path onto public_dir without collapsing relative segments, and checks only that the result is a readable regular file. NVD: A request for /../outside.txt escapes public_dir, and percent-encoding the dots reaches the same file.
Possible impact
This high severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for high severity review.
Affected context
Affected product or version requires source confirmation.
Remediation / advisory
Remediation reference present; patch status requires confirmation in the linked advisory.
Why it matters
This high severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for high severity review.; CVSS 7.5 (HIGH); not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD, OSV.
What to verify
Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.
Exposure hint
exposure unknown
Impact tags
Urgency reasons
Source-derived note
Summary derived from NVD / OSV description; unsafe procedural detail is not shown.
Redaction metadata
- source summary used
- True
- fallback summary used
- False
- unsafe procedural detail present
- false
- raw source displayed
- false
- public summary redacted
- true
Remediation handoff
Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.
Safety note
This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.
Official references
- https://nvd.nist.gov/vuln/detail/CVE-2026-93712
- https://osv.dev/vulnerability/CVE-2026-93712
- http://www.openwall.com/lists/oss-security/2026/09/22/4
- https://github.com/PerlDancer/Dancer2/commit/2446a09ffb83fef71cc75c327bd6e4b1f007b885.patch
- https://github.com/PerlDancer/Dancer2/security/advisories/GHSA-6xw8-v24c-m783